JP7487667B2 - 光学構造体およびアーティファクト低減方法 - Google Patents

光学構造体およびアーティファクト低減方法 Download PDF

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JP7487667B2
JP7487667B2 JP2020571212A JP2020571212A JP7487667B2 JP 7487667 B2 JP7487667 B2 JP 7487667B2 JP 2020571212 A JP2020571212 A JP 2020571212A JP 2020571212 A JP2020571212 A JP 2020571212A JP 7487667 B2 JP7487667 B2 JP 7487667B2
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cells
cell
optical structure
pleat
shift amount
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JPWO2020162449A1 (ja
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一成 三井
光一 篠田
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/30—Identification or security features, e.g. for preventing forgery
    • B42D25/324—Reliefs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/30—Identification or security features, e.g. for preventing forgery
    • B42D25/328—Diffraction gratings; Holograms
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/18—Diffraction gratings
    • G02B5/1842—Gratings for image generation
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/18—Diffraction gratings
    • G02B5/1861—Reflection gratings characterised by their structure, e.g. step profile, contours of substrate or grooves, pitch variations, materials

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Optical Elements Other Than Lenses (AREA)
  • Prostheses (AREA)
JP2020571212A 2019-02-07 2020-02-04 光学構造体およびアーティファクト低減方法 Active JP7487667B2 (ja)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP2019020496 2019-02-07
JP2019020496 2019-02-07
PCT/JP2020/004105 WO2020162449A1 (ja) 2019-02-07 2020-02-04 光学構造体およびアーティファクト低減方法

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JPWO2020162449A1 JPWO2020162449A1 (ja) 2021-12-09
JP7487667B2 true JP7487667B2 (ja) 2024-05-21

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JP2020571212A Active JP7487667B2 (ja) 2019-02-07 2020-02-04 光学構造体およびアーティファクト低減方法

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EP (2) EP3923043B1 (de)
JP (1) JP7487667B2 (de)
AU (1) AU2020218988A1 (de)
WO (1) WO2020162449A1 (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3923043B1 (de) 2019-02-07 2023-12-27 Toppan Printing Co., Ltd. Optische struktur und verfahren zur artefaktreduktion

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20120319395A1 (en) 2009-12-04 2012-12-20 Giesecke & Devrient Gmbh Security element, value document comprising such a security element and method for producing such a security element
US20130093172A1 (en) 2009-12-04 2013-04-18 Giesecke & Devrient Gmbh Security element, value document comprising such a security element, and method for producing such a security element
US8866008B2 (en) 2005-06-16 2014-10-21 Saint-Gobain Glass France Transparent glass pane provided with a surface structure
US20170336644A1 (en) 2009-02-20 2017-11-23 Rolling Optics Ab Devices for integral images
WO2018097314A1 (ja) 2016-11-28 2018-05-31 凸版印刷株式会社 表示体、およびその真贋判定方法、ならびに印刷物
WO2019022210A1 (ja) 2017-07-26 2019-01-31 凸版印刷株式会社 光学構造体および認証体

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITTO20030734A1 (it) * 2003-09-24 2005-03-25 Fiat Ricerche Concentratore di luce multifocale per un dispositivo per la conversione di radiazione, ed in particolare per la conversione della radiazione solare in energia elettrica, termica o chimica.
EP3923043B1 (de) 2019-02-07 2023-12-27 Toppan Printing Co., Ltd. Optische struktur und verfahren zur artefaktreduktion

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8866008B2 (en) 2005-06-16 2014-10-21 Saint-Gobain Glass France Transparent glass pane provided with a surface structure
US20170336644A1 (en) 2009-02-20 2017-11-23 Rolling Optics Ab Devices for integral images
US20120319395A1 (en) 2009-12-04 2012-12-20 Giesecke & Devrient Gmbh Security element, value document comprising such a security element and method for producing such a security element
US20130093172A1 (en) 2009-12-04 2013-04-18 Giesecke & Devrient Gmbh Security element, value document comprising such a security element, and method for producing such a security element
WO2018097314A1 (ja) 2016-11-28 2018-05-31 凸版印刷株式会社 表示体、およびその真贋判定方法、ならびに印刷物
WO2019022210A1 (ja) 2017-07-26 2019-01-31 凸版印刷株式会社 光学構造体および認証体

Also Published As

Publication number Publication date
EP3923043A4 (de) 2022-11-09
EP3923043A1 (de) 2021-12-15
AU2020218988A1 (en) 2021-08-12
EP4321906A2 (de) 2024-02-14
EP4321906A3 (de) 2024-03-06
EP3923043B1 (de) 2023-12-27
WO2020162449A1 (ja) 2020-08-13
JPWO2020162449A1 (ja) 2021-12-09

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